Elastic-fluid turbine.



W.y w. BAKE. ELBTIO FLUID TUBBINE. APPLIOATION FILED DEO. 27, 1910.

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.a rif-2- TTU/MEN w. w. BAKE; BLAST UID TUBBINE.' APPLIOAT ILED DBO. 27, 1910.

2 SEEE 1,O'3-5,54=3.v y Patented Aug. 13, 1912.`

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mir/458858; i w mwen/mf? /fwffilh wwf-Mmmm@ W- v rm WU M W f WILFOBD W. DARE, OFl MUSKEGON, MICHIGAN, ASSIGNOB TRIO HEADLIGHT COMPANY, 0F CHICAGO, ILLINOIS,

JERSEY.

' Specification of Letters Patent.

To PYLE-mammina. ELEC- A conronA'rIoN or NEW ELAsTrc-rmirn TUBBINE.

Patented Auga13, 1912.

Application mea December 27, 19in. serial No. 599,280.

T0 all 'whom t may concern Be it known that I, WILFORD W. DAKE, a;

citizen of the UnitedStates, residing at.

Muskegon, in, the county of Muskegon and State of Michigan, have invented ncwand useful Improvements in Elastic-Fluid Turbine-Engines, ofwhich the-following Iis a specification.

My invention relates to 'elastic fiuid turf bine engines, and its object is to provide an i rotor bucket and improved methods of attaching such buckets tothe roimproved tor body of such engines. This object attained by, and my present lnvention is embodied in, 'the mechanism hereinafter-tescribed, illustrated by the accompanying drawings, in which:

Figure 1 is a radial section of a rotor body and rotor bucket attached, illustrating my invention, and taken on line D-D of Fig. 3: Fig. 2 is a similar view, (the larger part of the rotor body broken away) taken on line Y--Y of Fig. 3; Fig. 3 is a view looking toward the rotors axis, illustrating a meth'od of attaching the buckets to the rotor body, several buckets being shown in section as on a view of a portion of the periphery of the rotor body looking toward its axis; Fig. 5 is a radial section of part of such rotor body, taken on line Z-Z of Fig. 4; Fig. 6 is a side view of oneof the rotor buckets; Fig. 7 is a transverse section of the same on line X-X of Fig. 6; and Fig. 8 is radial sectional view of a part of the rotor bodyV and plug, together with abucket'sectioned on the same line, and illustrating' a method of attaching such bucket to the rotor body.

The rotor body 1 having the hub lportion 2 carries a series of buckets 3 continuously arranged in a circle concentric with the-rotors axis. These buckets are internally concaved forward forming a curved fore wall 16,. and their side walls 4 and 5 diverge from their middle point toward each face of the rotor body, as particularly shown in Figs. 1, 2 and 8, so that such diverging portions may coincide as nearly as may be with the sides of a Widening or expanding jet of elastic duid delivered or redelivered to the bucket-s from either side of the rotor. These buckets are preferably stamped from sheet metal and are formed with wings 6, one on each side, for attaching them te the rot-or body.

line C-Qof Fig. 2; Fig. 4 is v v the strip 9.

In Figs. l, 2,:3 and 4, the buckets are .formed with theirwings 6 inclined relatively to each other and corresponding with two annular grooves 7 in the rotor body and concentric with its axis, said grooves converging toward their bottoms, forming a dovetail 8 as shown. The wings are inserted into slots 1Q formed by cutting away the overhangin portion of the dovetail S for a suiiicient istance to admit them, such slots extending to the bottom of the rooves 7 the buckets are then moved in eit er di rection, the wings sliding in the grooves and embracing the dovetail: when the -capacity of the grooves for thus holding the buckets -is reached, a `screw v13 is turned into its threaded seat 14 between the slots k12 in the 'periphery of the rotor body as shown, such screws head holding the last two buckets- 'one on either side-in place, (their wingsembracing thedovetaill and, through them, the others. Or; the wings may be formed as shown in Fig. 8 and adapted to be driven into the grooves. Saidv figure illustrates the position of the parts at the beginning of the operation in this method of attaching the buckets to the rotor body: as the wings are driven into the grooves, they are thus forced to converge. In either method, a retaining or tightening plug, in form a continuous strip 9, serving for many or for all the buckets, may be driven in beside the wings, thus firmly binding .the buckets in place on the rotor body. This done, the angular edge 10 of the rotor body between the grooves and either face of such body, may be upset or turned over inwardly to form a retaining flange 11 for securely holding The edges 15 of the buckets, formed by the ends of their curved fore wall. are sharp as particularlyshown in Fig. 7 in order to offer as little obstruction as may be to the transversely driven jet of elastic fluid.

My invention may be embodied in vary# converge a portion of their extent and then diverge', and a rotor body having an annular groove in which such wing portion is adapta rotor having a rotor bucket with Wing 30v ed to be tightly held to fasten the bucket to portions, a rotor body provided with relathe body. tively inclined concentric annular grooves 2. In a machine of the character described, holding. the wing portions respectively, one

5 a rotor having a rotor bucket formed with of said grooves having an overhanging Wall wing portions, and a rotor body having cirinterrupted at one point by an opening to 35l cular recesses' concentric with the rotors admit one of said wlng portions. axis and inclined to each other 1n the ro- 6. In amachine o f the character described, tors axial plane, into which recesses the va rotor having a recess, anda rotor bucket 10 wing portions respectively are inserted to portion, and a rotor body having a confasten the bucket to the body. centric` annular groove in which the wing 40 3. In a machine of the character described, is held, a plug driven into the groove beside a rotor having a rotor bucket formed with the Wing, and a-iange on the body turned wing portions, and a rotor body having con- 'over the outer extremity of the plug.

15 centric annular grooves converging toward 7. In a machine of the character described,

their bottoms, into which grooves the wing a rotor having a recess, and a rotor-bucket 45 /portions respectively are inserted to fasten formed of pressed sheet metal and having the bucket to the body. a curvedk forward `wall and side walls whose 4. In a machine of the character described, interior surfaces converge a portion of their $2.0 la rotor having a series of rotor buckets, extent and then diverge, and having a wing each formed with Wing portions, a rotor portion adapted to be inserted into the re,- 50

' I body having concentric annular grooves concess to attach the bucket totheirotor.

verging toward their bottoms, Vinto which In testimony whereof I have hereunto..- set grooves the wing portions respectively of my hand in presence of twosubscribing witf each bucket are'inserted, and a continuous nesses.

tightening plug driven into either oove WILFORD W. DAKE. beside the wings of a plurality of buc ets to -Witnesses: fasten the buckets to the body. HARRY J. BANDGREN,

'5. .In a machine of the character described, I4. M.- FOWLER.

copies of this patent may be obtained for ive cents each, by addressing' the f Commissioner, of Patents.

' Washington, D. c. 

